单项选择题
A.神经调节 B.体液调节 C.神经和体液双重调节 D.正反馈调节 E.负反馈调节
A.缩胆囊素 B.抑胃肽 C.胃动素 D.促胰液素 E.胰多肽
A.胃液的酸度含量较高而酶含量较低 B.胃液的酸度低而酶含量也低 C.胃液的酸度含量较高而酶含量更高 D.胃液的酶含量较高而酸度更高 E.胃液的酶含量较高而酸度较低
A.胃液的酸度含量较高而酶含量较低 B.胃液的酸度低而酶含量也低 C.胃液的酸度含量较高而酶含量更高 D.胃液酶含量较高而酸度更高 E.胃液的酶含量较高而酸度较低
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